Thanks, Steve and Eric.

Steve: I put an inverted caster on a cutoff on the floor and measured from the wheel to countertop to determine the leg height.

Eric: what type of file do you use? The edge of a flat file? I usually drag a chisel backward over the ridges (like a tall, thin scraper) to smooth them. (I always fear the chisel police will come after me.) It works okay, but a file might be faster.